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SAT - ONT

$76 Find cheap flights from San Antonio to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Antonio to Ontario departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
sáb. 6/29
sáb. 7/6

Search hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Cheap flight deals from San Antonio to Ontario (SAT-ONT)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Antonio to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
10:59 pm - 12:32 pmSAT-ONT
15h 33m1 stop
5:30 pm - 5:44 pmONT-SAT
22h 14m1 stop
$159Frontier
Find Deal
lun., ago. 12 - jue., ago. 22
10:58 pm - 11:59 pmSAT-ONT
27h 01m1 stop
10:31 pm - 6:07 pmONT-SAT
17h 36m1 stop
$163Frontier
Find Deal
dom., jun. 9 - mar., jun. 11
6:19 pm - 11:59 pmSAT-ONT
7h 40m1 stop
6:00 am - 1:31 pmONT-SAT
5h 31m1 stop
$312Delta
Find Deal
mar., jul. 9 - mar., jul. 16
6:02 am - 10:00 amSAT-ONT
5h 58m1 stop
2:44 pm - 10:58 pmONT-SAT
6h 14m1 stop
$326American Airlines
Find Deal
vie., sep. 13 - vie., sep. 13
1:20 pm - 5:22 pmSAT-ONT
6h 02m1 stop
6:00 am - 1:14 pmONT-SAT
5h 14m1 stop
$336United Airlines
Find Deal
vie., sep. 13 - dom., sep. 15
4:31 pm - 8:48 pmSAT-ONT
6h 17m1 stop
1:40 pm - 11:59 pmONT-SAT
8h 19m1 stop
$359United Airlines
Find Deal
mar., jun. 25 - mar., jul. 2
6:19 pm - 11:59 pmSAT-ONT
7h 40m1 stop
5:00 pm - 12:49 amONT-SAT
5h 49m1 stop
$376Delta
Find Deal
jue., jul. 18 - dom., jul. 21
7:45 pm - 11:59 pmSAT-ONT
6h 14m1 stop
4:36 pm - 11:13 pmONT-SAT
4h 37m1 stop
$386American Airlines
Find Deal
jue., jun. 20 - lun., jun. 24
6:12 pm - 3:33 pmSAT-ONT
23h 21m1 stop
7:00 am - 5:16 pmONT-SAT
32h 16m2 stops
$417Alaska Airlines
Find Deal
vie., sep. 13 - lun., sep. 16
7:00 am - 7:25 pmSAT-ONT
14h 25m1 stop
6:00 am - 5:30 amONT-SAT
21h 30m1 stop
$472Alaska Airlines
Find Deal
mar., jun. 25 - jue., jun. 27

Flights from San Antonio to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from San Antonio to Ontario to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from San Antonio to Ontario?

The average price of all flights from San Antonio to Ontario clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from San Antonio to Ontario, look for departures on Tuesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Ontario, Wednesday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from San Antonio to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Antonio to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from San Antonio to Ontario is August, where tickets cost $276 on average. On the other hand, the most expensive months are December and April, where the average cost of tickets is $462 and $404 respectively.

How far in advance should I book a flight from San Antonio to Ontario?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San Antonio to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from San Antonio to Ontario, you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 42 days before departure.

Which airlines provide the cheapest flights from San Antonio to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $76. KAYAK users also found San Antonio to Ontario round-trip flights on Frontier from $159 and on Delta from $312.

Good to know

Low season

January

High season

June

Cheapest flight

$76
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 13% increase in price.
Flight from San Antonio to Ontario

When to book flights from San Antonio to Ontario

Are your dates flexible? Find out the best times to travel from San Antonio to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Antonio to Ontario

  • What is the cheapest flight from San Antonio to Ontario?

    In the last 3 days, the lowest price for a flight from San Antonio to Ontario was $76 for a one-way ticket and $159 for a round-trip.

  • Do I need a passport to fly between San Antonio and Ontario?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from San Antonio to Ontario?

    When flying out of San Antonio you will be using San Antonio. You will be landing at Ontario, also known as Ontario.

  • Which aircraft models fly most regularly from San Antonio to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Antonio to Ontario?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between San Antonio and Ontario, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from San Antonio to Ontario, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Antonio to Ontario are Delta and United Airlines. With an average price for the route of $394 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $472 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San Antonio to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Antonio to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Antonio to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from San Antonio is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Antonio to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to San Antonio with another airline. Booking your flights between San Antonio and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Antonio to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from San Antonio up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from San Antonio to Ontario

 
See real verified KAYAK customer reviews for airlines flying from San Antonio to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Antonio to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10457 reviews
7.4Food
8.0Entertainment
8.2Boarding
8.6Crew
7.9Comfort
Airline reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

8.0 ExcellentLiam, May 2024SLC - SJC
Read more about Delta reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

So so. Terrible aircraft choice for that leg of the flight.

There were delays on both ends. It made it less than excellent. This plane was great though

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

They stuck us with multiple extra fees. I will never fly spirit again

I had no legroom, although I paid for extra legroom. I could barely put my bag in front of my feet and under the seat. The Wi-Fi was horrible. In fact the flight attendant said that they had to reboot it and see if it was going to work and never did.

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

They charged me 212.00 for a heavy check in bag at the gate. The pricing and process was so confusing - as if it was designed to purposefully gouge customers who need to board plane. That experience combined with the outrageous price charged will prevent me from ever flying Spirit again. And I’ll be sure to tell the story to anyone who cares to hear.

Terrible as usual!!!! Very unprofessional and rude flight attendants! You get what you pay for! HORRIBLE

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

The agent at the check in desk was absolutely rude. The rest of the team after that was good, but the check in process at LAS was miserable. The woman at the desk spoke like we were stupid and was rude throughout the process.

Its so random that they only allow 40 pounds on checked bags when all airlines take 55. They then charge you for each 10 extra pounds, so my checked suitcase was $130 and the flight $30 ... its like whattt, im for sure not traveling with Spirit again

Horrible. Delay after delay. People yelling and making obseen gestures!

So bad. The check in process was laborious and the check in agent didn't seem to know how to manage the process efficiently and was confused about how to check in my son's sports equipment. The baggage fees were outrageous and so expensive. $90 for a carry on bag? And $200 additional for 2 check ins. The security lines were insanely long and the terminal was not very nice in the Spirit area. $5 for a water on board. It was my first and last time flying Spirit - I tried to save $ by flying them due to the accommodating schedule but I should have paid for Southwest, because it would've actually ended up less expensive due to the free bags with Southwest. There were no charging ports on the airplane, no wifi and really uncomfortable seating. The flight crew were great though, courteous and efficient in their boarding. Flight was delayed 1 hour, but we made up 15 minutes in flight.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

Worst experience I have seen. The flight was cancelled without any reason.

Well I mean u get what u pay for so 🤷‍♂️

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

I paid for extra leg room. The flimsy plastic seat underneath the floatation seat did not line up with the arm rests. It seemed as if the plastic part was zip tied on but immovable. This caused severe uncomfortable for the duration of the flight.

The boarding time. I was in Section 1 the lady in charge just let people in section 3 without see us. Make a line , I have to step out and ask her. We were in the line and she just take my ticket and that’s it, so if I don’t ask her she could leave us at the end! We paid more for that privilege and. She doesn’t care….

Book cheap flights from San Antonio to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Antonio to Ontario found on KAYAK in the last 72 hours.
9/25mié.
1 stopFrontier
12h 18mSAT-ONT
$76
6/8sáb.
1 stopFrontier
14h 36mSAT-ONT
$80
7/9mar.
1 stopAmerican Airlines
4h 45mSAT-ONT
$143
6/25mar.
1 stopUnited Airlines
8h 45mSAT-ONT
$183
8/24sáb.
2 stopsUnited Airlines
12h 56mSAT-ONT
$188
9/25mié.
2 stopsAlaska Airlines
16h 45mSAT-ONT
$202
6/11mar.
1 stopDelta
7h 20mSAT-ONT
$241
8/31sáb.
2 stopsAlaska Airlines
14h 02mSAT-ONT
$296
6/4mar.
1 stopDelta
8h 20mSAT-ONT
$310
6/12mié.
2 stopsAmerican Airlines
8h 08mSAT-ONT
$338

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Last minute flights from San Antonio to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from San Antonio to Ontario that are departing in the next 10 days.
6/3lun.
multi-stopFrontier
17h 04mSAT-ONT
6/6jue.
multi-stopFrontier
17h 43mONT-SAT
$235
6/3lun.
multi-stopFrontier
13h 14mSAT-ONT
6/5mié.
multi-stopFrontier
16h 19mONT-SAT
$255
6/4mar.
multi-stopUnited Airlines
5h 43mSAT-ONT
6/18mar.
multi-stopUnited Airlines
8h 35mONT-SAT
$508
6/4mar.
multi-stopUnited Airlines
9h 48mSAT-ONT
6/18mar.
multi-stopUnited Airlines
8h 35mONT-SAT
$513
6/4mar.
multi-stop
7h 57mSAT-ONT
6/6jue.
multi-stop
5h 41mONT-SAT
$516
6/4mar.
multi-stopDelta
8h 20mSAT-ONT
6/7vie.
multi-stopDelta
9h 33mONT-SAT
$642
6/4mar.
multi-stop
10h 26mSAT-ONT
6/6jue.
multi-stop
5h 43mONT-SAT
$674
6/4mar.
multi-stopAmerican Airlines
7h 15mSAT-ONT
6/15sáb.
multi-stopAmerican Airlines
7h 48mONT-SAT
$766
6/4mar.
multi-stopAmerican Airlines
8h 17mSAT-ONT
6/15sáb.
multi-stopAmerican Airlines
6h 15mONT-SAT
$771
5/31vie.
multi-stopDelta
7h 27mSAT-ONT
6/3lun.
multi-stopDelta
5h 17mONT-SAT
$804

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San Antonio - Ontario Flights

Departure:

San Antonio (SAT)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - San Antonio

Cabin classes: